database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-08-19 23:22:23 +03:00
Code Activity

Fix MERGE with DO NOTHING actions into a partitioned table.

Browse Source 
ExecInitPartitionInfo() duplicates much of the logic in
ExecInitMerge(), except that it failed to handle DO NOTHING
actions. This would cause an "unknown action in MERGE WHEN clause"
error if a MERGE with any DO NOTHING actions attempted to insert into
a partition not already initialised by ExecInitModifyTable().

Bug: #18871
Reported-by: Alexander Lakhin <exclusion@gmail.com>
Author: Tender Wang <tndrwang@gmail.com>
Reviewed-by: Gurjeet Singh <gurjeet@singh.im>
Discussion: https://postgr.es/m/18871-b44e3c96de3bd2e8%40postgresql.org
Backpatch-through: 15
This commit is contained in:
Dean Rasheed
2025-03-29 09:58:40 +00:00
parent a0ed19e0a9
commit 8b6a0e2392
4 changed files with 34 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/backend/executor/execPartition.c
View File

@@ -876,7 +876,7 @@ ExecInitPartitionInfo(ModifyTableState *mtstate, EState *estate,
* reference and make copy for this relation, converting stuff that
* references attribute numbers to match this relation's.
*
* This duplicates much of the logic in ExecInitMerge(), so something
* This duplicates much of the logic in ExecInitMerge(), so if something
* changes there, look here too.
*/
if (node && node->operation == CMD_MERGE)
@@ -956,6 +956,8 @@ ExecInitPartitionInfo(ModifyTableState *mtstate, EState *estate,
NULL);
break;
case CMD_DELETE:
case CMD_NOTHING:
/* Nothing to do */
break;
default: